As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1107, JFK-LHR. (ETOPS) 'NAV PRED W/X DET FAULT ON TAXI OUT ( WEATHER RADAR SYSTEMS ).' T/S PER TSM 34-41-00-810-810-A. REMOVED AND REPLACED 13SQ1 PER AMM 34-51-00. ALL OPS NORMAL AT THIS TIME. THIS CLEARS MDDR MX-4 UPDATED PLACARD REMOVED.